There is, in stock and presumably virtually every non-RHS mod, a "railroad to nowhere" in Northern Canada, not far from Great Slave Lake and Lake Winnipeg.

This railroad ends in hex 208, 28 and is the location of Fort MacMurray, a town of very interesting economic import. It is the location of the first and oldest shale oil industry in the Western world (the only similar place I am aware of is in Manchukuo - developed about the same time by Japan).

This location has a successful (but low volume) "oil refinery" which "cooks" shale oil and separates the oil from water and other things which make it otherwise unsuitable for use. The process was not able to be scaled up for decades, but it did produce a useful amount of oil which, in game terms, can be "exported" automatically down the rail line. I estimate the place should have 10 oil wells and an amount of refinery capacity able to perfectly process them (which, in RHS terms, is 5 oil refineries). I also rate it as having 5 resource centers (RHS ones are smaller than stock) and 1 light industry plant (which processes 40% of the resources, leaving 60% for export down the rail line).